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\( w = 8 \) meters.
\( \frac{150 \text{ miles}}{5 \text{ gallons}} = 30 \text{ miles per gallon} \).
\( \frac{450 \text{ miles}}{30 \text{ miles per gallon}} = 15 \text{ gallons} \).
\( 15 \text{ gallons} \times \$3.50 \text{ per gallon} = \$52.50 \).
#### 52.50
\( x = \frac{15}{0.2} = 75 \) liters.
\( 100,000 \times 0.15 = 15,000 \)
\( 100,000 + 15,000 = 115,000 \)
\( 115,000 \times 0.20 = 23,000 \)
\( 115,000 + 23,000 = 138,000 \)
